Sell Lemons Rebirth & Evolution Guide
Rebirth and evolution are the two mid-game reset systems that separate stuck players from exponential growers. Rebirth trades your structures for permanent Alien Investor multipliers. Evolution swaps your fruit tier for a 42x income speed buff that compounds every level. This guide answers the exact timing questions — when to rebirth, when to evolve, and how the two systems interact before ascension.
Unlock thresholds (community estimates)
| System | Value threshold | What you keep |
|---|---|---|
| Rebirth | ~50–100 sextillion total value | Alien Investor count & % bonus |
| Evolution | ~50–100 octodecillion + investors | Nothing — but 42x speed buff per tier |
| Ascension | 320 Octogintillion + full tycoon | Halos, Forever Purchases, 7.77x multiplier |
What evolution does
Each evolution grants a 42x income speed buff over the previous tier — and it compounds. Evolution 1 makes everything 42 times faster. Evolution 2 stacks another 42x on top. Fruit progresses Lemon → Orange → Lime across nine confirmed levels. Once unlocked, evolve frequently rather than hoarding — the speed warp turns day-long grinds into minutes.
Rebirth timing rules
Rebirth when rebuilding to your current checkpoint feels faster than grinding one expensive cosmetic at 10% of your income rate. First rebirth: after the first Alien Investor offer feels game-changing (~350%+). Stack investors through multiple rebirths before pushing evolution. Never rebirth below 200% investor bonus unless testing.
Related pages
Frequently asked questions
When do I unlock rebirth?
Around 50–100 sextillion total value (cash invested + held combined).
When do I unlock evolution?
Around 50–100 octodecillion value with sufficient investor count.
Should I evolve before or after rebirth?
Stack rebirths for investors first, then chain evolutions once the cost is manageable.